i want to use backtrack 4 to try to hack my own wep secured wifi network.
I am using VMware workstation and i downloaded the VMware bactrack 4 final file.
But when I try to open it in vmware workstation i have the following error:

Host usb device connections disabled.

The connection to the VMware USB arbitration service was unsuccessful.Please check the status of this service
in the microsoft management console.

But my network card RTL8187 work's just fine in my windows vista.
So when I start backtrack 4 I can't use the internet and my network card isn't reconised.
What is my problem ?